Sylvanus d



(No Model.)

S. D. LOGKE.

SELF CLOSING GAS BURNER.

Patented Feb-15, 1887.

I VENTEJ WITNE '5 SE 5 UNITED STATES PATENT ()FFIcE.

SYLVANUS D. LOGKE, OF HOOSIGK FALLS, NEW YORK.

SELF-CLOSING GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 357,840, dated February 15, 1887.

Application filed July 31, 1886. Serial No. 209,658.

To aZZ whom it may concern.-

Be it known that I, SYLVANUS D. Looks, a citizen of the United States, residing at Hoosiok Falls, in the county of Bensselaer and State of New York, have invented certain new and useful Improvements in Self-Closing Gas- Burners, of which the following is a full, clear, and exact description.

My invention consists in certain features of construction hereinafter specified, and particularly pointed out in the claims.

In the drawings, Figure 1 is a front View or elevation of a burner with my improvements attached. Fig. 2 is a top view of the same, but showing not-hing of the burner belowthe line 00 3 Fig. 1. Fig. 3 is a perspective View showing how the bars, lever, and support are connected. Fig. at is a perspective view of a portion ofthe burner, showing the pawl pushed back by the lever as the bars are expanded by the heat and the cock locked on the shoulder of the lever; and Fig. 5 is a top View of the parts shown in Fig. 4.

A is the base-section, to which is attached the burner 13. Ois the burner-tip, D the gaspipe to which the base A is attached, and E is the handle and F the stem of the shut-off cock.

Sleeved on the burner and firmly secured thereto is the supporta, having opposing lateral and upward extending arms. To the end of one of these arms the lever c'is fulcrumed, while the bars bjoin the lever to the other arm of the support. I prefer to use two bars; but only one is required. These bars should pass on either side of and close to the flame, and the slot in the tip 0 should be parallel to the bars, as shown in Fig. 2.

Attached to the base A is a pawl, d, pivoted at (1, that is held by a spring, 0, normally against a stop, f. This pawl has a ratchetshaped ledge or shoulder at its end, as shown. The shut-off cock F is closed by the spring 9, and is locked open by means of the radial pin or projection 1 As the cock is opened by the finger-piece or handle E, this pin i drives back the pawl and is caught on the hook or ledge at its lower end, where it is temporarily held until the expansion of the bars I) swings the lever c on its fulcrum until its lower end crowds (No model.)

back the pawl from underneath the pin i,when the latter, released from the pawl, is caught on the hook at the end of the lever 0 where it remains until the extinguishment of the flame causes the bars b to contract and so swing back the lever until the hook or catch atits lower end is withdrawn from underneath the pin 1', when the cock is closed by the action of the spring 9.

To prevent the heat from extending from the bars to the support, and so partly neutral izing the expansion of the bars, I insert between the bars and the support and the bars and the lever, at their pivot-points, washers 72 of some poor heat-conducting material, as asbestus-cloth or paper.

- What I claim is- 1. In a self-closing gasburner, the combination, with the cook, a radial pin, and a closing-spring, and with the burner provided with a yoke, of an expansion-bar and a detentpawl pivoted to the burner and yieldingly pressed toward the pin, and a releasing-lever pivoted to the yoke and to the expansion-bar, having its free end arranged in a common vertical plane with the detent, substantially as specified.

2. In a self-closing gas-burner, a cook, 'a radial pin, and a closing-spring, a yieldinglypressed detent suspended from the base of the burner and in a vertical plane, with a releas ing-detent, a yoke, and an expansion-bar, and a releasing-detent suspended vertically from the yoke, substantially as specified.

3. In aself-closing gas-burner, a cock, aclosing-spring, and a radial pin, in combination with a suspended spring-pressed detent pivoted to the base of the burner, a yoke mounted upon the burner and supporting an expansionbar and in substantiallythe same vertical plane with the cock, and a release-detent pivoted to the yoke and suspended in the same vertical plane as and constructed to release the springpressed detent by the expansion of the bar, substantially as specified.

SYLVANUS D. LOGKE.

Witnesses:

E. J. LOCKE, J. P. LOCKE. 

